Steel line stopper



FIG. 1 is a perspective view of a steel line stopper;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view of the steel line stopper in a state of use, wherein the broken line showing is a representation of automotive steel line.

The broken lines shown in the drawings illustrate environmental structure for the steel line stopper that forms no part of claimed design. 

CLAIM The ornamental design for a steel line stopper, as shown and described. 